Hoisting and conveying device



n. s. ANDREWS.

HOISTING AND CONVEYING DEVICE.

APPLICATION FILED JULY 2,1921.- i,429,012.. e Sept- 12, 1922.

2 SHEETSSHEET l.

D. S. ANDREWS.

HOISTING AND CONVEYING DEVICE.

APPLICATION FILED JULY 2, I921.

Patented Sept. 12, 1922.,

2 SHEETS-SHEET 2.

Patented Sept. 12, 1922.

UNITED STATES DONALD S. ANDREVIS, OIE CLEVELAND, OHIO, ASSIGNOE, TO ANDREWS CRANE CORPOR-A- FATENT 'IION, OF CLEVELAND, OHIO, A CORPORATION OF DELAWARE.

HOIS'IING AND CONVEYING DEVICE.

Application filed. July 2, 1921.

To all whom it may concern:

Be it known that I, DONALD S. Annnnws, a citizen of the United States, resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented new and useful Improvements in Hoisting and Conveying Devices (Case C), of which the following is a specification; the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to hoisting and conveying devices and particularly to that class thereof known as telpher cranes, in which the device is suspended from an overhead track upon which it travels. More specifically, the invention consists of a modification of the invention shown, described and claimed in Patent No. 1,367,907, issued to me February 8th, 1921.

The object of the invention is to provide a structure of the type above mentioned which will be specially adapted for use under certain conditions, such as for instance, when it is desirable to have as much head room as possible. To this end, therefore, my present invention is characterized by a depending collapsible mast, to the movable member of which a laterally extending boom is connected.

The annexed drawings and the following description set forth in detail certain means embodying my invention, the described means, however, constituting but one of the various mechanical forms in which the principle of the invention may be applied.

In said annexed drawings:

Figure 1 represents a side elevation of a telpher crane embodying my present invention.

Figure 2 represents a fragmentary section taken upon the plane indicated by line II-- II, Figure 1.

Figure 3 represents a plan view.

Figure 4 represents a fragmentary front view taken upon the plane indicated by the line IV-IV, Figure 1.

Figure 5 represents a fragmentary vertical section, upon an enlarged scale and upon a plane parallel with the path of traveling movement of the crane.

Figure 6 represents a fragmentary section taken upon the plane indicated by line VI-VI, Figure 5.

Serial No. 482,004.

Figure 7 represents a horizontal section taken upon the plane indicated by the line VIIVII, Figure 5.

Figure 8 represents a section taken upon the plane indicated by the line VHL-VIH,

Figure 5.

Figure 9 represents a section taken upon the plane indicated by the line IX.IX, Figure 5,

As in the structure shown and described in the above mentioned issued Letters Patent, the illustrated embodiment of my present invention comprises a track 1 of I- beam construction suitably suspended from above and upon which travels a trolley 2.

This trolley includes two swivel trucks 3-3 actuated by motors 41-4: and suitable gearing connected with the traction wheels 5 5. Lateral extensions 6-6 are provided with anti-friction rollers 7-7 which engage the lower surfaces of side rails 88, whereby lateral sway f the device 18 counteracted. as shown in the sald above-mentioned patent.

* In addition to the trucks 3-8, the trolley which is formed with a flange 14, and which is seated in the enlarged portion 12 of such opening. Interposed between the shoulder 15 of the opening and the bottom of the flange 1 1 is a ball-bearing 16 which receives the downward thrust of the mast, due to its weight and supported load. Interposed laterally between the flange and the inside vertical surface of said enlargement of the opening, is a second set of ball-bearings 17 which receives the lateral thrust of the upper end of the mast member 13, as will be understood. A second set of ball-bearings 18 is interposed between an integral flange 19 formed on the mast member and the inside of the bottom of the opening 11, as shown in Figure 2. It will therefore be seen that this mast member is rotatable on the casting 9. The flange 19 extends downwardly somewhat beyond the lower end of the opening 11 and has fixedly secured thereto a gear-wheel A. central 85 V 20. This gear-wheel is engaged by a pinion 21 mounted upon a vertical shaft 22 which is keyed to a worm-gear 23, engaged by a worm 24;, mounted upon a horizontal shaft 25, which has'secured thereto a gear-wheel26. This gear-wheel is engaged by a pinion 27 secured to the shaft 28 of a motor 29, which is supported upon transverse channels 30,-

secured to the bottom of the longitudinal channel members 10-10. l/Vhen the electric current is turned into the motor 29, it will be seen that the mast member 13 will be rotated upon its vertical axis. 1

As shown in-Figures 7, 8 and 9, the mast member 13 is hollow, and preferably rectangular in its general cross-sectional contour. Within this vertically fixed but rotatable mast member 13 is a vertically movable mast member'31, to the lower end of which is fixed a laterally extending boom 32, Figure -1. This boom carries a block and fall 33 which maybe wound up upon a drum 3% actuated by a motor 35 through suitable intermediate gearing-36. A suitable cage 37 is also mounted upon the lower end of the member 31 in which the operator is stationed. As shown, thiscage is, of course, placed opposite the boom 32 so as to counter-balance it and its load as far as possible.

The upperend of the member 31 is provided with anti-friction rollers 38 which engage the inside surfaces of the member 13. and the lower end of the member 13 is pro vided with anti-friction rollers 39 which extend through suitable apertures therein, and engage the outside surfaces of the inner member 31. One of the outside surfaces of the member 31 has secured thereto, a vertical rack 40 which is engaged by a pinion 41 mounted upon a shaft 42 which carries a gear-wheel 13 engaged by a pinion 44. The latter is mounted upon a shaft l5 carrying a gear-wheel 46 which is engaged by a pinion 47, mounted upon the shaft 18 of a'motor 49. By turning the current into this motor 4:9, it will be seen that the inner member 31 may be raised and lowered. A lug 50 is secured to the inside of member 13, and is located in the line of the path of movement of one of the sets of rollers 38, whereby the downward movement of member 31 is limited.

A collapsible mast is therefore provided by my above described construction which comprises a vertically fixed but rotatable member and "a vertically movable member totatably fixed with reference to the rotatable member. The boom 32 therefore, may be rotated and raised or lowered asmay be desired. I

What. I claim is: I 1. In a hoisting and conveying device, the combination of an overhead support; a trolley adapted to travel upon said support; a

depending and contractible mast rotatably mounted upon said trolley; a laterallyextending boom mounted upon a movable portion of said mast; means for contracting and. extending sa d mast; and means for rotating same.

2. In a hoisting and conveying'device, the

combination of an overhead support; atrolley adapted to travel upon said support; a depending mast rotatably mounted upon said trolley and comprising a vertically fixed and a vertically movable member; a laterally extending boom mounted upon the vertically movable mast member; means for actuating said vertically movable member; and means for rotating said mast 3. In a hoisting and conveying device, the combination of an overhead support; aftrolley adapted to travel upon said support; a

depending mast rotatably mounted upon said trolley and comprising a vertically fixed outer member and a vertically movable inner member; a laterally extending boom mounted upon said movable member; means for actuating said inner member; and means'for rotating said outer member; said inner member being rotatably fixed with reference to sald outer member.

Signed by me, this 13th day of une', 1921.

DONALD S. ANDREWS. 

